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A(2 ,3) ,B(-1, 1) are two points.If P is...

`A(2 ,3) ,B(-1, 1)` are two points.If `P` is a point such that `/_APB=90^(@)` and the locus of `P` is `x^(2)+y^(2)-ax-by+1=0` then `|a+b|` is equal to

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Knowledge Check

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